Plate printing machine



July 28, 1931.

w. E. BENNISQN PLATE PRINTING MACHINE Filed Jan. 11, 1929 3 Sheets-Sheet l July 28, 1931. w. E. BENNISON PLATE PRINTING MACHINE Filed Jan. 11, 1929 3 Sheets-Sheet *2 INVEN'I'OR M M July 28, 1931. -w. E. BENNISON 1,815,895

PLATE PRINTING MACHINE Filed Jn. 11, 1929 s Shets-Sheet s I t e vzl ifit t l ie qt mach nes; and particnlefly tbfthe class 'g'e1f1-; f.

eraHyQkno -n as power -plgite printing fm'ao V nre 1" ts with V fas iheepwhi a*pme'syl l r ym 5 one orimo e. e graved 1 p t s :21

[in leading 'eflge of the'fshe'et f I thezlmpressibnfis I y Qglt has be'enifound thatthe highfdegr'eei of p me eq m ce sesith 'lp tee the T 'apenftobe embeddedfinto the coverin'g "015 hefinipi" sion cylinder-{gird if the grippers; ,Inaintain a' firmfholdfon 1511' e sheet, it is frei qnentlyj tornfor crinkle d cl l iefto' the fact that 15f the; 'rjadin fithe'impression; cylinder at the po ntiofimpression eontaet is less than else- 7 't Where, and 1 eon'seqnent-I the. sheet: travels I lGWei" fi tha i i f het ed c ed;men epr v dedhr re? 11;; 90' tending.the rotetion'of the fippei's a'fterthey,

Jaye passed the fbite'eof 'jthe leyl'indersythns ceusinga slackness-of thepoltion-Iof the Sheet";

het hzis been printediand eivoiding the diffi'culty experienced; Q v

I I heuespecjel object .of the invention is to 1p oyide aame ans forfholding asheetien an 1m:

" v ,lprelsflsion eylinder; in position jto receive an gimpifes sion, and a m: a, portion of ,thesh'eet;

, has been printedto create aslaekness inithat sfronlthe holcling' m ans. 1

j Itiekalso'anIob/"et'of vide a fsheetgholdingl neans' of generally. im-

lpnowjedlconstnnotion,iwlieifieby the device will '35 be simple, durable and inexpensive in een vsstructiofn, ew e11" es ,pliactioal sertfic e'z tble V endleffieient in its ns e. F f with the-foregoing] 11d other objectsin yiew, whiehf williappezu as thedeseliption, P .3 proceeds,,theminvention;resides in the v (join-t bination end Qarifengeinent of I parts, land in the :,deta,11se of 3 construction" hereinafter de- I sc i'libed end elaimed, it being unde1stood-that variouschanges in theprecise embodiment of; 5 the invention herein" dis olosed may be made 51 1 scope of hat, 'iisi claimed :Without,

departingfromthespiritoftheinyention. I 7 Y In,the aceompagnyingdrawings,

, @tmmmm re frotary a of Figure l cert I I and Others shown 1n seetlon jF lgure 4 and the .e'onneetions driving thefdeliv'ery fside 'fratnes of Carries bearings fforYthe she-ft 13,"t which Y t he irnpres 'sion eylinder 14: is secured. The

Ph eW ml v, acting" relation iththe impression cylinder. b'portion oi it,,withontfreleasing the; $31j1eetf A ffeed boardlfi isprovided, frornwhich I ,shelets'tofb thel lnventionto pro-I except 'When'they ar known rnanner; I

Hand "the gripper ']o ars23, to the IY.',I A CORPORATION 01* NEW 'IYORKI j :11,g1 29,;ser i;1 no; 33117.33, 1am gin-Gee 3mm Jannerjiglezg; e

Figure 3 is a View of the impression eyL index andndjac'ent pal ts Showing the'meeh'aa ew 'ed in theTclireCtion offer-row 3 I I j nim a l V 21in of thelpjarts being broken I I is a fragmentaryvieiv showing a :PQILlQILOIffihG ndxsf the lmpresslon cyl nder mechanism:

Zybut jsho'wlnjg a motli-fied embodiment of the "invention and Figure 6 s a vlew shoWingthe impfession 151s similarly supported ineoeprinfted nrefed to the printing f The plates 18 endil 9 mey be secured to the I I usual manner;

v 9 mdjejd,'"onefof whmh shown lnthe ransed ljos'itionnt' 21L it will be understood thetj sheet 'in position to be taken 22, I and gripper abutments ibetween' grippers] being operated in ,a w ell" 23,,the3e grippefs Q'lhe gnppers QQgareeecured to the sheftfl i, sh tter),

1' through the cylinderil These shzifts, eXten and in ith ejpreferred xa r'rangement, have b'eal nting machine incorpomting 'ithe amen 7 ure2 "isag}cletailetlfview similar to e usual form are pro I e raised to clear the" sheet they bear ngai' n st stops on the feed bo rdand 1 serve to align the ANDSWORTH, :Lonmon; -ENGLAND, vAssIGNoie we I r 'e 9 ,1"

I s [a dia'grainnmtic View of n por I I c115, andthereafteftheypass toe delivery, chain 17 which conveys them to "edeli'veryfl I "qy1inc1en15fby anyjsuitablemeans, andfbe I iiriked 'and wipea in the cylinder partly, broken iztwa'y and with the modified arrangement as viewed in thedirecings in the disc gears'or carriers 26 and 27,

which turn on the cylinder shaftil3l, and

which mesh respectively with gears 28 and 29, keyed tothe shaft 31. Y 3 The shaft 31 is rotatably supportedin the frames lland 12, and carries hubs 32 and 33, to which are attached arms 34 and 35, which support-the spindle 36. A rod 37 is secured to the arms 34 and 35,and serves tohold them and 46 to "for driving the discs 26 and 27 which support the gripper mechanism, and is made from gear 42 to, 41, 41 to 39, 38 to 29, and from 29 w two gear trains vare arranged to rotate the cylinder 14 and the discs 26 and'27 at the" by same rotative speed, so'that'normally they 3 7 roller 56 running in a l 58, secured to the cylinder shaft 13. It will freely on the hub of i turn meshes with agear 42, secured to a'shaft 43. Gears 44 and 45 are also securedtoshaft I 43, and gear 44 meshes "with gear 146, which, V meshes with the cylinder gear 47'. Y

' 7' is connected by belt 51 with pulley52 secured An electric motor 48 has a pulley i 49 which to shaft 53, to which a gear 54 is also secured,

l and whichjmeshes with the gear Acon- I nectionv for drivingthe impression cylinder:

is thus provided from the motor to shaft 53, andthence through gears 54 to 45, 44-to 46, 47. A connectionis also provided and 28, to 27 and 26 respectively. These aredriven in synchronism'. V V

The'hub 32 carries'an arm 55, having a be understood that when the cylinder revolves, the arm 55 will turn the hub 32 on the shaft 31, and rock the arms'34' and 35, carry-- ting the gears 38 and 39, and this motion will result in alternatelyadvancingand retarding r the gears 38'and39, and of29 and 41, which causes a relativemotion between the gears willclo'se on the sheet as the rotation ofthe discs 26 and 27' with rela ti'cn tothe cylinder 14; this action being caused by the difference in the diameters of 29 and 41 when the arms 34 and 35 areroclred.

Any. suitable means maybe used for con trolling the action of the grippers 22, so they the cylinder passes the registry stops and open when they reach theconveyorf of the delivery mechanism, where. the sheet istaken' by grippers 59, carried 'on 'the chain 17.

' board 16 and, against the registry stops 21,

andis taken bv the grippers 22. The stops swing out oftheway to 'let the sheet pass,

I and it is carried forwardintothe bite of the f cylinders, where the impression is made.

After the gripperslhave passed this point,

the arms34 and-35 are rocked'downward V causing a-slight decelerationof the discs: 26

on, the spindle 36. The

slot 57 in the cam disc *drawn between the cylinders solel'y'by their nip, and provision is thus made to allow for a 'diiference in speed between the sheet and that of the normal periphery of the impression cylinder. 7 ,7 V

' After the grippers 22 release the sheet and itiistaken by the delivery grippers59, the arms 34 and 35 are rocked upward, restoring the grippers 22 and thegripper bars 23 totheir former, position relative to the mpression cylinder" 14.

4 In the modified form of .the invent-ion shown in Figures 5 and6, the disc gears 26 and 27 are omitted and the grippermecha nism is carriedby arms :59, s'ecuredto the shaft 61, which is arranged to oscillate in bearings inthe ends of the cylinder14. V

v v The shaftcarryin'g the rippers 22, is

rot'atably supported by thearms 59; and is secured to an arm 62, carrying'a roller 63, which engages acam64, secured to the frame 11. A spring 65, connected 'to'the arm '62,

tends to turn the-- shaft '24 clockwise, and

hold the grippers closed, but they areopened 1 at'the proper time by the action of the roller 63 on the cam 64. Thepressure of the spring 65 tends also to turn the shaft 61 clockwise.

An arm 66, is pivoted at 67, and connected to a link 68, which is in turn connected to the arm59. A roller 69. on the arm 66, engages the cam 71, secured to the' frame 12, thus re sisting the action of the spring 65 on the shaft61. f f Itwill readily be understood that when the cylinder 141 is revolved the engagement ofthe roller 69 with the cam 71 will cause the gripper mechanism to be alternately-moved toward and away from the side of the gap in V the impression cylinder indicated at 72, and. produce the same result on the sheet as the mechanism shown in Figures 1 to 4.

Itiwill thus be seenthat means have been provided, anda method disclosed, for'holding a sheet bymeans of; grippers until it is "engaged bythe printing cylinders and thereafter, while the grippers still hold the sheet,

moving the grippers with relation to the. impression sheet, whereby any difference that may exist of impression and the speed pr the periphery of the impression cylinder produces no'harm ful result; V

VVhat I claim is? i i sion cylinder, sheet gripping mechanism rotating with the cylinder, and means for recylinder to form a slackness-in the.

y v, between the speed of the sheet-at the point peration, a shefiet is placed on the feed v 1." Inaprinting machine,arotatingimpresi 4 person l the time wer sheet is being i a printed.

In a printing 'finachine,a rotating im .pression cylinder,fa' sheet gripping vmechanism associated 'Wit h'the' cyllnder and r'otatingrat a sloWerspeedthan that of the cylinder during a portion of each revolution j' of said gripping mechanism and while a c 's heetis being printed. v

In a rintin rnachine a rotatin" im- 7 P a fpression cylinder, and a sheet gripping mechanism "associated" with the cylinder and ro- Ltating at a slower speed than the'cylinder during one portion of each revolution While H I V 7 during another portion of a 'sheetis being printed andat a faster speed i I w g each revolntlon of said gripping mechan sm. Y 1

supported on a separaterotating carrier, a

: 7 driving? mechanism adapted to normally drive the carrier at the same speed asthat of s "the, cylinder, and meansfor'decreasing the speed or the carrier, while a'sheet isjbei'n'g printed.

' I 5. In a printing" rotary impres- I sion cylinder, asheet gripping mechanism,

supported. onaseparate rotating carrier, a

H 'frame carrying a *planetaryf-gear system 1 adaptedto normally drive the carrier at the same speed as that of the cylinders, and means to move the frame of thegear system to pe- 'ing printed.

6. In a rota y machine having a plate cylinder anda coacting impression cyl- M inder,'means for holding theileadingedge of i a sheet by a holding devicej Whichfrotates about theaXis ofthe impression cylinder and leads the sheet totheibite of thecylinders, and means for retarding the motion of the ;;holding device after it has passed thelbite v of the cylinders J 7.*In a rotary printing machine, a plate cylinder and a coacting impression cylinder,

sheet holding' device that rotates with the o f f impressioncylinder While'taking asheet and I hile leadingit to the bite-of the cylinders,

andmeans for retarding'the rotation of the 1 holdingdevice after theleading edgeof the V j'sheet'haspassedlthe bitegof the cylinders. '8'. In a rotaryjprinting machine having a 7 plate cylinder and a coasting impression cyli,

inder, means foreholding the leading edge of a sheet-and carrying it to and past the bite of the cylinders, l and mechanism for moving said holding means backward relative to the motion of the impression cylinder while the sheet is in the bite of the cylinders. I c 7 9. Inarotary printing machine having a f plate cylinder and'a eoacting impression cylinder,grippersadapted to hold a sheet on the impression cylinder, means to move the grip- 'pers at the peripheral speed of the impres' sion cylinder, and means to retard the motion of the grippers while the sheet is the bite l of the cylinders.

10.- In a rotary printing machine having a plate cylinder and a coacting impression the impression cylinder, means to move-the grippers in synchronismwith the impression cylinder, and means to retard the motion of U the grippers While the sheet is in the bite of the cylinders and to accelerate the motion of the grippers after they have released the sheet. v

11. In a rotary printing machine having a plate cylinder and-a coacting impression cylinder, means for taking theleading edge of a sheet and-carrying it to and past the bite of the cylinders, and Ineans'for moving said taking means backward relative to the mo tionof the impression cylinder while" the sheet 1s belng printed and to accelerate the motion of said taking means after it has re- '7 leased" the sheet.

7 lV ILLIAM EDWARD BENNISOlfT,

riodically increase and alternately decrease the speed of'the carrier while a sheet, is becylinder, grippers'adapted to hold a sheeton 7 I 

